Plate-finishing machine.



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PLATE FINISHING MACHINE.

v APPLICATION FILED mm". a, 1914. 1,126,983. Patented Feb, 2, 1915.

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S. G. GOSS.

PLATE FINISHING MAGHINE.

APPLICATION FILED JUNE 3, 1914.

1,126,983. Patented Feb. 2, 1915.

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UN STATES PATE T O FICE.

SAMUEL G. GOSS, OF GLENGOE, ILLINOIS, ASSIGNOR DO THE GOSS PRINTING PRESS COMPANY, OF CHICAGO, ILLINDIS A GOBZEORATIQN F ILLINOIS.

PLATE INISH NG 49311 Sp c fi atio o etter lwlfi- Patented Feb. 2, 1915.

Application filed June 3, 1914. Serial No. 842,587.

To all whom it may concern:

Be it known that I, SAMUEL G. Gross, a citizen of the United States, residing at Glencoe, in the county of Cook, State of Illinois; have invented certain new and useful Improvements in Plate-Finishing Machines, of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to plate fin shing machines of the type employing a rotatable drum for carrying a printing plate into operative engagement with means for shaving the ribs on the inner face and for severing the tail and trimming the ends of the plate.

It is one of the objects of my invention to provide an automatically-acting plate-stop which shall prevent the insertion of a plate into the drum until the plate previously acted upon has been fully Withdrawn from the drum. In this way the plate-stop device, by which the plate is positioned in the drum in proper position for the trimming operation, is given an opportunity to ass-u-me its normal operative position before the new plate is pushed into the drum.

It is another object of myinvention to improve devices of this type in sundry details hereinafter pointed out.

The means 'by which I have accomplished these objects are illustrated in the drawings and are hereinafter specifically described.

In the drawings,Figure 1 is a central vertical section through a plate finishing machine embodying my improved platestop device, and adapted to be'equipped w th my improved drum-extending device; F 1g. 2 is a side view of the drum shown in Fig. l equipped with my improvements; Flg. 3 is an end view of the parts shown in Fig. 2; Fig. {L is an edge View of the means for ex tending the drum for trimming an eightcolumn plate ;v Fig. 5 is a side view of the part shown-in Fig. 4; and Fig. 6 is a central vertical section through one end of the drum, showing the drum-extending ring in position thereon.

Referring to the several figures of the drawings in which corresponding parts are indicated by the same reference characters,l'0 indicates the framework of the machine having revolubly mounted thereon a drum 11 adapted to be rotated by means of a worm 12 fixed upon a shaft 13 driven from any suitable source of power the worm l2 meshing with a worm gear 14 loosely mounted adapted to be secured thereto when desired for the rotation of the drum. receiving end of the drum 11 is located a standard 15 adapted to have slidably mounted thereon a printing plate 16 in alinement with suitable supports 17l8 mounted upon the inner face of the drum 11 whereby a plate is adapted to be slid from the standard 15 into position in the drum. Extending into the drum 11 from its front end is a bracket 19 suitably supported from the framework 10, said bracket being provided with guide-blocks 2021 adapted to guide the plate being inserted into the drum. The bracket 19 is also provided with a suitable shaving knife 22 at one side and a mangler 23 at the opposite side. A shield 24 is pro vided in connection with the means for looking the plate in the drum for preventing the accumulation of chips and shavings therein. No claim is made herein to the mangler 23 or the shield 24 inasmuch as these devices are the invention of Joseph J. VValse-r, and are covered by his application for patent thereon, filed June 3, 1914, Serial N o. 8-12,579. I

25 indicates a plate-stop device mounted upon the bracket 19 controlled by a lever 26 extending to the rear end of the drum 11. As shown in Fig. l, the plate-stop device-25 is shown as serving to stop a plate 27 in proper position in the drum 11 prior to the locking of the plate in the drum. N 0 claim is made herein to the plate-stop device 2526 inasmuch as this device is the invention of William Evensen covered by his application for patent thereon, filed June 3, 191%, Serial No. 842,591.

28 indicates a rotary brush of any suitable type adapted to be rotated by means of a gear29 meshing with a gear 30 which is driven from anysuitable source of power. The brush-28 is located in front of the drum 11 in alinement therewith whereby the finished plate can he slid from the drum 11 along suitable slideways to cooling position relative to the brush 28, a plate 31 being shown in position for cooling in Fig.1. plate is adapted to be moved from the linishing drum *1 1 into cooling position relative-4:0 the brush 28 by means upon the drum 1 1 and At theplate of a jaw 32 reciprocated back medium ofva rack-bar 33 driven by a gear 34 mounted upon a shaft 35, in turn driven by a pinion 36 rotated by a segment 37 formed upon a bell-crank lever 38 swung back and forth through the medium of a printing plate to be trimmed until after the end - means of a spring printing plate which has just'been trimmed has passed entirely out of contact with the drum, 42 indicates a bell-crank lever pivotally mounted upon a bracket 48 supported from theframework 10 and normally held turned in clockwise direction in Figs. 1 and 2 by means of a spring 42 At the lower end of one arm of the bell-crank lever 42 is revolubly mounted .a roller 44 adapted to be contacted by a plate in the course of being withdrawn from the drum 11 for throwing the bell-crank lever 42 in counterclockwise direction in Fig. 1. Pivotally connected to the upper end of theother arm of the bell-cranklever 42 is a rod 45 having a yielding pivotal connection at its rear with the upper arm of another bellcrank lever 46 which is pivotally mounted upon a bracket .47 depending from the slideway 48 through which the rack-bar 33 is reciprocated. The yielding connection between the rod 45 and the bell-crank lever 46 comprises av slot 45 in whichthe pivot pin'45 works, said pivot pin. being yieldingly held at the rear .end of the slot by 45 bearing against a bearing block 45. The rear end of the horizontally-extending arm of the bellcrank lever 46 is provided with adownwardly-turned end whereby when the bellcrank lever 42 is turned in counterclockwise direction in Fig. 1, as indicated in dotted lines therein, the turned end 49 stands in the path of a printing plate to prevent its being slid from the standard15 into position upon the supporting ribs 17-18 of the drum. In case a printing plate should be pushed under the downwardly-turned end of the bell-crank lever 46 before a plate already in the shell or drum had been moved out, upon the engagement of the roller 44 by said plate when being withdrawn from the shell the lever 46 would be turned'into contact with the new printing plate about to be'pushed into the drum but the spring 46 would yield so as to prevent breakage of any of the parts.

. As best shown in Figs. 1 and 6, the inner face of the rear edge of the drum 11 is and forth through the cutting operations,

rabbeted out to receive a correspondinglyshaped ring 50 extending from the front face of a drum-extending member 51, said member 51 being adapted .to be secured in position upon the rear end of the drum by means of screws 52 inserted in suitable registering openings in the member 51 and the drum 11. Revolubly mounted in the frame work 10 at one side-of the drum 11 is a shaft 53'having fixed upon its front end a rotary cutter 54 adapted to trim the front end of the plate as it is carried by. the drum past the rotary cutter, the shaft 53 being driven from any suitable source of power through the medium of the sprocket gear 55 fixed upon the front end of the shaft 53. Mounted upon the. rear end of the shaft 53 is a similar rotary cutter comprising a hub 56 having fixed thereon a disk 57 in which are removably mounted a plurality of cutters 58. With the drumextending member 51 in position upon the drum 11, as shown in Figs. 2 and 3, the hub 56 of the rearmost. rotary cutter is placed upon the end of the shaft 53 and secured in position thereon in the position shown in solid lines in Fig. 2. Upon the rotation of the drum 11, while at. the same time the rotary cuttersare being rotated, the plate is brought into the path of the rotary cutters for i the plate being cut of a length longitudinally of the drum such as to accommodate eight columns. For the tail cutting operation the drum-extending member 51 serves to support the rear end of the plate firmly in position adjacent to the rotary cutter so that it is impossible to twist or distortthe plate. If it were desired to cut a plate of a length to accommodate seven columns, all that would be' necessary to do preparatory to such operation would beto remove the member 51 and to turn the hub 56 of the rotary cutter end for end on the shaft 53,. also removing the blades 58 and turning them half way around so as to cut a beveled end at the rear of the plate instead of a square end.

I What I claim as my invention and desirev to secure by Letters Patent, is

1. In a plate finishing machine, the combination of a shell, means cotiperating with said shell for finishing a plate in position therein, and means for preventing the insertion of another plate into said shell in the course of the removal of a plate from said 3. In a plate finishing machine, the combination of a shell, means cooperating With said shell for finishing a plate in position therein, and automatically-acting means for preventing the insertion of another plate into said shell in the course of theremoval of a plate from the shell.

-l. In a plate finishing machine, the combination of a shell, means cooperating with said shell for finishing a plate in position therein, and means actuated by the removal of a plate from the shell for preventing the insertion of another plate therein.

In a plate finishing machine, the combination of a shell, means cooperating with said shell for finishing a plate 1n position therein, a stop device at the rear end of said shell, and means actuated by the removal of a plate from the shell for moving said stop device into position for preventing the insertion of another plate therein.

6. In a plate finishing machine, the combination of a shell, means cooperating with said shell for finishing a plate in position therein, a lever pivotally mounted relative to said shell adapted to be turned down into position to prevent the insertion of a plate in said shell, and means actuated by the withdrawal of the plate from the shell for moving said lever into plate stopping position.

7. In a plate finishing machine, the com Copies of this patent may be obtained for five cents each, by addressing the bination of a shell, means said shell for finishing a plate in position therein,

of said shell, an arm extending normally into the path of a plate being removed from said shell and adapted to be displaced by the removal of the plate from the shell, and connections between said arm and said platestop device whereby upon the removal of a plate from the shell the plate-stop device is moved into operative plate-stopping position.

8. In a plate finishing machine, the combination of a shell, means cooperating with said shell for finishing a plate in position therein, a plate-stop device at the rear end of said shell, a bell-crank lever at the front end of said shell, a roller carried by one arm of said bell-crank lever standing normally in the path of a plate being removed from the shell, and connections between said bell-crank lever and said plate-stop device whereby the swinging of the bell-crank lever upon the removal of a plate from the shell serves to move said plate-stop device into operative plate stopping position to prevent the insertion of another plate into the shell.

SAMUEL G. GOSS.

Witnesses:

J OSEPH J. WALSER, GEO. A. EDDY.

Commissioner of Patents,

Washington, I). 0.

cooperating with a plate stop device at the rear end t 

